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nl80211: Add MLME auth work-around for -EEXIST errno

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The Linux 4.9 kernel, at least, can return EEXIST when trying to auth a
station that already exists.

We have seen this bug in multiple places, but it is difficult to
reproduce. Here is a link to someone else that appears to have hit this
issue: https://github.com/greearb/ath10k-ct/issues/18

Signed-off-by: Ben Greear <greearb@candelatech.com>
This commit is contained in:
Ben Greear 2018-03-16 14:31:55 -07:00 committed by Jouni Malinen
parent 4449efeb1d
commit f875da0448
1 changed files with 4 additions and 4 deletions
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8
src/drivers/driver_nl80211.c
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@ -3348,11 +3348,11 @@ retry:
msg = NULL;
if (ret) {
wpa_dbg(drv->ctx, MSG_DEBUG,
"nl80211: MLME command failed (auth): ret=%d (%s)",
ret, strerror(-ret));
"nl80211: MLME command failed (auth): count=%d ret=%d (%s)",
count, ret, strerror(-ret));
count++;
if (ret == -EALREADY && count == 1 && params->bssid &&
!params->local_state_change) {
if ((ret == -EALREADY || ret == -EEXIST) && count == 1 &&
params->bssid && !params->local_state_change) {
/*
* mac80211 does not currently accept new
* authentication if we are already authenticated. As a